US Patent 7390343 - Nanoalumina fiber water filter

http://www.freepatentsonline.com/7390343.html

This patent from Argonide Nanomaterials teaches a water filter that uses fibrous nanoalumina materials for higher efficiency contamination adsorption. Claim 1 reads:

1. A filtration device, said filtration device comprising at least one cartridge, each said cartridge having a support member that supports at least one fibrous structure, each said fibrous structure comprising nano alumina fibers and second fibers mixed with said nano alumina fibers, wherein said second fibers are arranged to create asymmetric pores.